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Stromatolite trinket
Stromatolite is a trinket in Fiend Folio, a mod for The Binding of Isaac.
Description
Grants a 2.5% chance for rocks to drop a 
Half Red Heart when destroyed.
Grants a 25% chance for Tinted Rocks and Super Special Rocks to drop an additional 
Half Soul Heart when destroyed.
Special synergies
The following special synergies and interactions for Stromatolite have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | Doubles the chances. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the trinket description on the mod's external Wiki.
- Download Fiend Folio from the Steam Workshop.
Leaky Rock 
Twin Tuffs 
Wetstone 
Ribbed Rock 
Fiendish Amethyst 
Sturdy Rock